Fourdrinier machine.



2 SHEETS-SHEET I.

Patented Mar. 27, 1917.

/A/ l/E/V 7'09 A455,? 7- J. 04 was A TT'K ALBERT J. DAVIES, OF KENOGAMI, QUEBEC, CANADA.

FOURDRINIER MACHINE.

Application filed January 5, 1916.

To all whom it may concern:

Be it known that I, ALBERT J. DAVIES, of Kenogami, in the Province of Quebec, a citizen of the United States, and residing at the above place in the Dominion ofCanada, have invented certain new and useful Improvements in Fourdrinier Machines, of which the following is a specification.

This invention relates to paper making machines of the Fourdrinier type and is in the nature of an improvement on my U. S. Pat. No. 1,090,974, issued Mar. 24, 1914, to which reference may be had. This patent is adapted for use where the side rails or bars are arranged in pairs and is acceptable for that form of construction.

The present inventionis adapted for application to those forms of machine where a single fixed side bar is used and comprises an arrangement whereby the reciprocating movement of each suction box is independent from that of any other.

In the drawings which accompany and form part of this specification,

Figure 1 is a diagram of a portion of a Fourdrinier machine.

Fig. 2 is an enlarged side view showing two boxes and their mountings, partly in section.

Fig. 3 is a partial cross-section on line 3 3 of Fig. 2

The frame 1, Shaker rail 2, Deckel strap 3, breast roll 4 and couch rolls 5, 5 are of the usual construction and. need no detailed description.

The suction boxes 6 are provided with flexible suction tubes 7 connected to the or dinary manifold 8, and are adapted to closely underlie the apron of wire cloth 9, with room for a certain amount of end play.

The means for movably mounting boxes 6 between fixed rails 10 form the principal subject matter for this invention and my preferred form may be described as follows,-

At about the center of each rail 10 and opposite the ends of boxes 6 I form a perfo-' ration 12 adapted to -loosely receive a tongue 13, fast on a cover-plate 14. and bored to closely receive bolts 15 which pass upward through bosses 16 of a casting 17, the latter being secured to box 6 by screws 18.

Round-headed nuts 19 will permit some vertical adjustment of box 6, as by shims 20, seen in Fig. 3..

Specification of Letters Patent.

Patented Mar. 2'7, 1917..

Serial No. 70,402.

A pivotal bearing 21, fast on casting 17, provides a connection for eccentric rod 22 and an eccentric-23 on a driving shaft 24. A pulley 25 is a possible means for transmitting power to shaft 24.

On the upper surface of rail 10 and adjacent to perforation 12, I provide pockets 26 whose bottoms are lined with steel or phosphor-bronze bearing plates 27 tosupport a series of rolls 28 or, if desired, a nest of balls may be substituted, as the clesirable feature of this hearing is to provide a rolling support for plate 14. Overlying rolls 28 are bearing plates 29, nested within suitable recesses 30 in plate 14; and overhanging lips 31, on the latter, tend to exclude moisture.

It will be noticed that whereas the rails 10 are preferably inclined, the pockets 26 are level and the thrust of motion is equally distributed over the bearing surfaces of the rolls 28.

I do not limit myself to the precise construction shown.

Vhat I claim is 1. In a machine of the F ourdrinier type, a fixed side rail with an opening; a cover plate overlying said opening and provided with a tongue adapted to loosely occupy said opening; a suction box adapted to be secured to said tongue; and means for transversely reciprocating said box.

2. A fixed rail with an opening; a cover plate adapted to overlie said opening; a tongue fast on said plate and adapted to loosely occupy said opening; an anti-friction bearing for said plate; and means for causing reciprocating movements of said cover plate.

3. In a machine of the Fourdriniertype,a pair of side rails each provided with an opening; a suction box; a pair of cover plates overlying said openings and each provided with a depending tongue adapted to loosely occupy one of said openings; antifriction bearings interposed between said rails and said cover plates; means for at taching said box to said tongue; and means for causing relative movement between said box and rails.

4. In a. machine of the Fourdrinier type, a fixed rail; a suction-box; movable means for mounting said box in guided relation to said rail; and mechanism for transversely reciprocating said means.

5. In a machine of the Fou 'drinier type, In testimony whereof, I have aflixed my a fixed rail; 11 suction-box; movable means, slgnature 1n the presence of two witnesses.

fast on said box, whereby said box is sup- ALBERT J. DAVIES. ported by said rail; anti-friction bearings \Vitnesses: 5 for said means; and mechanism for trans- A. T. PALMER,

versely reciprocating said means. WALLIS L. BUISEY. 

